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EffectReverb: Make use of std::array where applicable 

Makes the array types more strongly typed and allows removing the use of
hardcoded array sizes.
This commit is contained in:
Lioncash 2020-03-27 16:55:41 -04:00
parent 5b6d736cfb
commit 99f00a7cba
2 changed files with 83 additions and 74 deletions
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38
include/amuse/EffectReverb.hpp
View File

@ -1,10 +1,12 @@
#pragma once
#include <array>
#include <cstdint>
#include <memory>
#include "amuse/Common.hpp"
#include "amuse/EffectBase.hpp"
#include "amuse/IBackendVoice.hpp"
namespace amuse {
@ -144,16 +146,20 @@ public:
/** Standard-quality 2-stage reverb */
template <typename T>
class EffectReverbStdImp : public EffectBase<T>, public EffectReverbStd {
ReverbDelayLine x0_AP[8][2] = {}; /**< All-pass delay lines */
ReverbDelayLine x78_C[8][2] = {}; /**< Comb delay lines */
using CombCoeffArray = std::array<std::array<float, 2>, NumChannels>;
using ReverbDelayArray = std::array<std::array<ReverbDelayLine, 2>, NumChannels>;
using PreDelayArray = std::array<std::unique_ptr<float[]>, NumChannels>;
ReverbDelayArray x0_AP{}; /**< All-pass delay lines */
ReverbDelayArray x78_C{}; /**< Comb delay lines */
float xf0_allPassCoef = 0.f; /**< All-pass mix coefficient */
float xf4_combCoef[8][2] = {}; /**< Comb mix coefficients */
float x10c_lpLastout[8] = {}; /**< Last low-pass results */
CombCoeffArray xf4_combCoef{}; /**< Comb mix coefficients */
std::array<float, NumChannels> x10c_lpLastout{}; /**< Last low-pass results */
float x118_level = 0.f; /**< Internal wet/dry mix factor */
float x11c_damping = 0.f; /**< Low-pass damping */
int32_t x120_preDelayTime = 0; /**< Sample count of pre-delay */
std::unique_ptr<float[]> x124_preDelayLine[8]; /**< Dedicated pre-delay buffers */
float* x130_preDelayPtr[8] = {}; /**< Current pre-delay pointers */
PreDelayArray x124_preDelayLine; /**< Dedicated pre-delay buffers */
std::array<float*, NumChannels> x130_preDelayPtr{}; /**< Current pre-delay pointers */
double m_sampleRate; /**< copy of sample rate */
void _setup(double sampleRate);
@ -173,17 +179,23 @@ public:
/** High-quality 3-stage reverb with per-channel low-pass and crosstalk */
template <typename T>
class EffectReverbHiImp : public EffectBase<T>, public EffectReverbHi {
ReverbDelayLine x0_AP[8][2] = {}; /**< All-pass delay lines */
ReverbDelayLine x78_LP[8] = {}; /**< Per-channel low-pass delay-lines */
ReverbDelayLine xb4_C[8][3] = {}; /**< Comb delay lines */
using AllPassDelayLines = std::array<std::array<ReverbDelayLine, 2>, NumChannels>;
using CombCoefficients = std::array<std::array<float, 3>, NumChannels>;
using CombDelayLines = std::array<std::array<ReverbDelayLine, 3>, NumChannels>;
using LowPassDelayLines = std::array<ReverbDelayLine, 8>;
using PreDelayLines = std::array<std::unique_ptr<float[]>, 8>;
AllPassDelayLines x0_AP{}; /**< All-pass delay lines */
LowPassDelayLines x78_LP{}; /**< Per-channel low-pass delay-lines */
CombDelayLines xb4_C{}; /**< Comb delay lines */
float x168_allPassCoef = 0.f; /**< All-pass mix coefficient */
float x16c_combCoef[8][3] = {}; /**< Comb mix coefficients */
float x190_lpLastout[8] = {}; /**< Last low-pass results */
CombCoefficients x16c_combCoef{}; /**< Comb mix coefficients */
std::array<float, 8> x190_lpLastout{}; /**< Last low-pass results */
float x19c_level = 0.f; /**< Internal wet/dry mix factor */
float x1a0_damping = 0.f; /**< Low-pass damping */
int32_t x1a4_preDelayTime = 0; /**< Sample count of pre-delay */
std::unique_ptr<float[]> x1ac_preDelayLine[8]; /**< Dedicated pre-delay buffers */
float* x1b8_preDelayPtr[8] = {}; /**< Current pre-delay pointers */
PreDelayLines x1ac_preDelayLine; /**< Dedicated pre-delay buffers */
std::array<float*, NumChannels> x1b8_preDelayPtr{}; /**< Current pre-delay pointers */
float x1a8_internalCrosstalk = 0.f;
double m_sampleRate; /**< copy of sample rate */

103
lib/EffectReverb.cpp
View File

@ -1,7 +1,7 @@
#include "amuse/EffectReverb.hpp"
#include <algorithm>
#include <cmath>
#include <cstring>
#include "amuse/IBackendVoice.hpp"
@ -10,23 +10,20 @@ namespace amuse {
/* clang-format off */
/* Comb-filter delays */
static const size_t CTapDelays[] =
{
constexpr std::array<size_t, 3> CTapDelays{
1789,
1999,
2333
};
/* All-pass-filter delays */
static const size_t APTapDelays[] =
{
constexpr std::array<size_t, 2> APTapDelays{
433,
149
149,
};
/* Per-channel low-pass delays (Hi-quality reverb only) */
static const size_t LPTapDelays[] =
{
constexpr std::array<size_t, 8> LPTapDelays{
47,
73,
67,
@ -42,8 +39,7 @@ static const size_t LPTapDelays[] =
void ReverbDelayLine::allocate(int32_t delay) {
delay += 2;
x8_length = delay;
xc_inputs.reset(new float[delay]);
memset(xc_inputs.get(), 0, x8_length * sizeof(float));
xc_inputs = std::make_unique<float[]>(delay);
x10_lastInput = 0.f;
setdelay(delay / 2);
x0_inPoint = 0;
@ -83,8 +79,8 @@ template <typename T>
void EffectReverbStdImp<T>::_update() {
float timeSamples = x148_x1d0_time * m_sampleRate;
double rateRatio = m_sampleRate / NativeSampleRate;
for (int c = 0; c < 8; ++c) {
for (int t = 0; t < 2; ++t) {
for (size_t c = 0; c < NumChannels; ++c) {
for (size_t t = 0; t < x78_C[c].size(); ++t) {
ReverbDelayLine& combLine = x78_C[c][t];
size_t tapDelay = CTapDelays[t] * rateRatio;
combLine.allocate(tapDelay);
@ -92,7 +88,7 @@ void EffectReverbStdImp<T>::_update() {
xf4_combCoef[c][t] = std::pow(10.f, tapDelay * -3.f / timeSamples);
}
for (int t = 0; t < 2; ++t) {
for (size_t t = 0; t < x0_AP[c].size(); ++t) {
ReverbDelayLine& allPassLine = x0_AP[c][t];
size_t tapDelay = APTapDelays[t] * rateRatio;
allPassLine.allocate(tapDelay);
@ -111,17 +107,16 @@ void EffectReverbStdImp<T>::_update() {
if (x150_x1d8_preDelay != 0.f) {
x120_preDelayTime = m_sampleRate * x150_x1d8_preDelay;
for (int i = 0; i < 8; ++i) {
x124_preDelayLine[i].reset(new float[x120_preDelayTime]);
memset(x124_preDelayLine[i].get(), 0, x120_preDelayTime * sizeof(float));
for (size_t i = 0; i < NumChannels; ++i) {
x124_preDelayLine[i] = std::make_unique<float[]>(x120_preDelayTime);
x130_preDelayPtr[i] = x124_preDelayLine[i].get();
}
} else {
x120_preDelayTime = 0;
for (int i = 0; i < 8; ++i) {
x124_preDelayLine[i] = nullptr;
x130_preDelayPtr[i] = nullptr;
for (auto& delayLine : x124_preDelayLine) {
delayLine.reset();
}
x130_preDelayPtr.fill(nullptr);
}
m_dirty = false;
@ -132,23 +127,23 @@ void EffectReverbStdImp<T>::applyEffect(T* audio, size_t frameCount, const Chann
if (m_dirty)
_update();
float dampWet = x118_level * 0.6f;
float dampDry = 0.6f - dampWet;
const float dampWet = x118_level * 0.6f;
const float dampDry = 0.6f - dampWet;
for (size_t f = 0; f < frameCount; f += 160) {
for (unsigned c = 0; c < chanMap.m_channelCount; ++c) {
float* combCoefs = xf4_combCoef[c];
const auto& combCoefs = xf4_combCoef[c];
float& lpLastOut = x10c_lpLastout[c];
float* preDelayLine = x124_preDelayLine[c].get();
float* preDelayPtr = x130_preDelayPtr[c];
float* lastPreDelaySamp = &preDelayLine[x120_preDelayTime - 1];
ReverbDelayLine* linesC = x78_C[c];
ReverbDelayLine* linesAP = x0_AP[c];
auto& linesC = x78_C[c];
auto& linesAP = x0_AP[c];
int procSamples = std::min(size_t(160), frameCount - f);
const int procSamples = std::min(size_t(160), frameCount - f);
for (int s = 0; s < procSamples; ++s) {
float sample = audio[s * chanMap.m_channelCount + c];
const float sample = audio[s * chanMap.m_channelCount + c];
/* Pre-delay stage */
float sample2 = sample;
@ -188,7 +183,8 @@ void EffectReverbStdImp<T>::applyEffect(T* audio, size_t frameCount, const Chann
/* All-pass filter stage */
linesAP[0].xc_inputs[linesAP[0].x0_inPoint] =
xf0_allPassCoef * linesAP[0].x10_lastInput + linesC[0].x10_lastInput + linesC[1].x10_lastInput;
float lowPass = -(xf0_allPassCoef * linesAP[0].xc_inputs[linesAP[0].x0_inPoint] - linesAP[0].x10_lastInput);
const float lowPass =
-(xf0_allPassCoef * linesAP[0].xc_inputs[linesAP[0].x0_inPoint] - linesAP[0].x10_lastInput);
linesAP[0].x0_inPoint += 1;
linesAP[0].x10_lastInput = linesAP[0].xc_inputs[linesAP[0].x4_outPoint];
@ -202,7 +198,8 @@ void EffectReverbStdImp<T>::applyEffect(T* audio, size_t frameCount, const Chann
lpLastOut = x11c_damping * lpLastOut + lowPass * 0.3f;
linesAP[1].xc_inputs[linesAP[1].x0_inPoint] = xf0_allPassCoef * linesAP[1].x10_lastInput + lpLastOut;
float allPass = -(xf0_allPassCoef * linesAP[1].xc_inputs[linesAP[1].x0_inPoint] - linesAP[1].x10_lastInput);
const float allPass =
-(xf0_allPassCoef * linesAP[1].xc_inputs[linesAP[1].x0_inPoint] - linesAP[1].x10_lastInput);
linesAP[1].x0_inPoint += 1;
linesAP[1].x10_lastInput = linesAP[1].xc_inputs[linesAP[1].x4_outPoint];
@ -238,26 +235,27 @@ void EffectReverbHiImp<T>::_setup(double sampleRate) {
template <typename T>
void EffectReverbHiImp<T>::_update() {
float timeSamples = x148_x1d0_time * m_sampleRate;
double rateRatio = m_sampleRate / NativeSampleRate;
for (int c = 0; c < 8; ++c) {
for (int t = 0; t < 3; ++t) {
const float timeSamples = x148_x1d0_time * m_sampleRate;
const double rateRatio = m_sampleRate / NativeSampleRate;
for (size_t c = 0; c < NumChannels; ++c) {
for (size_t t = 0; t < xb4_C[c].size(); ++t) {
ReverbDelayLine& combLine = xb4_C[c][t];
size_t tapDelay = CTapDelays[t] * rateRatio;
const size_t tapDelay = CTapDelays[t] * rateRatio;
combLine.allocate(tapDelay);
combLine.setdelay(tapDelay);
x16c_combCoef[c][t] = std::pow(10.f, tapDelay * -3.f / timeSamples);
}
for (int t = 0; t < 2; ++t) {
for (size_t t = 0; t < x0_AP[c].size(); ++t) {
ReverbDelayLine& allPassLine = x0_AP[c][t];
size_t tapDelay = APTapDelays[t] * rateRatio;
const size_t tapDelay = APTapDelays[t] * rateRatio;
allPassLine.allocate(tapDelay);
allPassLine.setdelay(tapDelay);
}
ReverbDelayLine& lpLine = x78_LP[c];
size_t tapDelay = LPTapDelays[c] * rateRatio;
const size_t tapDelay = LPTapDelays[c] * rateRatio;
lpLine.allocate(tapDelay);
lpLine.setdelay(tapDelay);
}
@ -273,17 +271,16 @@ void EffectReverbHiImp<T>::_update() {
if (x150_x1d8_preDelay != 0.f) {
x1a4_preDelayTime = m_sampleRate * x150_x1d8_preDelay;
for (int i = 0; i < 8; ++i) {
x1ac_preDelayLine[i].reset(new float[x1a4_preDelayTime]);
memset(x1ac_preDelayLine[i].get(), 0, x1a4_preDelayTime * sizeof(float));
for (size_t i = 0; i < NumChannels; ++i) {
x1ac_preDelayLine[i] = std::make_unique<float[]>(x1a4_preDelayTime);
x1b8_preDelayPtr[i] = x1ac_preDelayLine[i].get();
}
} else {
x1a4_preDelayTime = 0;
for (int i = 0; i < 8; ++i) {
x1ac_preDelayLine[i] = nullptr;
x1b8_preDelayPtr[i] = nullptr;
for (auto& delayLine : x1ac_preDelayLine) {
delayLine.reset();
}
x1b8_preDelayPtr.fill(nullptr);
}
x1a8_internalCrosstalk = x1dc_crosstalk;
@ -292,25 +289,25 @@ void EffectReverbHiImp<T>::_update() {
template <typename T>
void EffectReverbHiImp<T>::_handleReverb(T* audio, int c, int chanCount, int sampleCount) {
float dampWet = x19c_level * 0.6f;
float dampDry = 0.6f - dampWet;
const float dampWet = x19c_level * 0.6f;
const float dampDry = 0.6f - dampWet;
float* combCoefs = x16c_combCoef[c];
const auto& combCoefs = x16c_combCoef[c];
float& lpLastOut = x190_lpLastout[c];
float* preDelayLine = x1ac_preDelayLine[c].get();
float* preDelayPtr = x1b8_preDelayPtr[c];
float* lastPreDelaySamp = &preDelayLine[x1a4_preDelayTime - 1];
ReverbDelayLine* linesC = xb4_C[c];
ReverbDelayLine* linesAP = x0_AP[c];
auto& linesC = xb4_C[c];
auto& linesAP = x0_AP[c];
ReverbDelayLine& lineLP = x78_LP[c];
float allPassCoef = x168_allPassCoef;
float damping = x1a0_damping;
int32_t preDelayTime = x1a4_preDelayTime;
const float allPassCoef = x168_allPassCoef;
const float damping = x1a0_damping;
const int32_t preDelayTime = x1a4_preDelayTime;
for (int s = 0; s < sampleCount; ++s) {
float sample = audio[s * chanCount + c];
const float sample = audio[s * chanCount + c];
/* Pre-delay stage */
float sample2 = sample;
@ -367,7 +364,7 @@ void EffectReverbHiImp<T>::_handleReverb(T* audio, int c, int chanCount, int sam
allPassCoef * linesAP[1].x10_lastInput -
(allPassCoef * linesAP[0].xc_inputs[linesAP[0].x0_inPoint] - linesAP[0].x10_lastInput);
float lowPass = -(allPassCoef * linesAP[1].xc_inputs[linesAP[1].x0_inPoint] - linesAP[1].x10_lastInput);
const float lowPass = -(allPassCoef * linesAP[1].xc_inputs[linesAP[1].x0_inPoint] - linesAP[1].x10_lastInput);
linesAP[0].x0_inPoint += 1;
linesAP[1].x0_inPoint += 1;
@ -391,7 +388,7 @@ void EffectReverbHiImp<T>::_handleReverb(T* audio, int c, int chanCount, int sam
lpLastOut = damping * lpLastOut + lowPass * 0.3f;
lineLP.xc_inputs[lineLP.x0_inPoint] = allPassCoef * lineLP.x10_lastInput + lpLastOut;
float allPass = -(allPassCoef * lineLP.xc_inputs[lineLP.x0_inPoint] - lineLP.x10_lastInput);
const float allPass = -(allPassCoef * lineLP.xc_inputs[lineLP.x0_inPoint] - lineLP.x10_lastInput);
lineLP.x0_inPoint += 1;
lineLP.x10_lastInput = lineLP.xc_inputs[lineLP.x4_outPoint];